The star Sirius is about 8.1x1013 Km from Earth . Assuming that light travels at 3x105 Km/sec. Find how long light from Sirius takes to reach earth .
please give full explanation
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Answer:
2.7×10^8 second
Step-by-step explanation:
distance=8.1×10^13 km
speed = 3×10^5 km/second
time = distance/speed
time = (8.1×10^13 km) / (3×10^5km/second)
time=2.7×10^8 seconds
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